/** * Copyright (c) 2018, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef NRF_CRYPTO_SHARED_H__ #define NRF_CRYPTO_SHARED_H__ /** @internal @file * * @defgroup nrf_crypto_shared Shared macros for nrf_crypto * @{ * @ingroup nrf_crypto * * @brief Module containing shared macros for nrf_crypto. */ #include "sdk_macros.h" #include "nrf_crypto_mem.h" #ifdef __cplusplus extern "C" { #endif /** @internal @brief Macro for verifying statement to be true. It will cause the exterior function * to return err_code if the statement is not true, but only after freeing the * memory pointed to by p_memory if p_memory is not NULL. * * @param[in] statement Statement to test. * @param[in] err_code Error value to return if test was invalid. * @param[in] p_memory The memory block to be freed in case of error. * * @retval nothing, but will cause the exterior function to return @p err_code if @p statement * is false. */ #define NRF_CRYPTO_VERIFY_TRUE_DEALLOCATE(statement, err_code, p_memory) \ do \ { \ if (!(statement)) \ { \ if (p_memory != NULL) \ { \ NRF_CRYPTO_FREE(p_memory); \ } \ return err_code; \ } \ } while (0) /** * @internal @brief Macro for verifying that a function returned NRF_SUCCESS. It will cause the * exterior function to return err_code if the err_code is not @ref NRF_SUCCESS, * but only after freeing the memory pointed to by p_memory if p_memory is not * NULL. * * @param[in] err_code The error code to check. * @param[in] p_memory The memory block to be freed in case of error. */ #ifdef DISABLE_PARAM_CHECK #define NRF_CRYPTO_VERIFY_SUCCESS_DEALLOCATE() #else #define NRF_CRYPTO_VERIFY_SUCCESS_DEALLOCATE(err_code, p_memory) \ NRF_CRYPTO_VERIFY_TRUE_DEALLOCATE((err_code) == NRF_SUCCESS, (err_code), p_memory) #endif /* DISABLE_PARAM_CHECK */ /** * @internal @brief Generate a vector with random data of given size. * * @details This function does not check or lock the CC310 mutex, and should only be used * * @note Only for internal use in nrf_crypto. * * @param[in,out] p_target Buffer to hold the random generated data. * This buffer must be at least as large as the size parameter. * @param[in] size Length (in bytes) to generate random data for. * * @retval See return values for @ref nrf_crypto_rng_vector_generate. */ ret_code_t nrf_crypto_rng_vector_generate_no_mutex(uint8_t * const p_target, size_t size); /** * @internal @brief Generate a vector of constrained random data of given size, between the * specified min and max values. * * @details This function does not check or lock the CC310 mutex, and should only be used * * @note Only for internal use in nrf_crypto. * * @param[in,out] p_target Buffer to hold the random generated data. * This buffer must be at least as large as the size parameter. * @param[in] p_min Byte array defining the lower limit of the random vector. * @param[in] p_max Byte array defining the upper limit of the random vector. * @param[in] size Length (in bytes) to generate random data for. Note that all three * buffers (p_target, p_min and p_max) must be of this size. * * @retval See return values for @ref nrf_crypto_rng_vector_generate_in_range. */ ret_code_t nrf_crypto_rng_vector_generate_in_range_no_mutex(uint8_t * const p_target, uint8_t const * const p_min, uint8_t const * const p_max, size_t size); /** @internal @brief Swap bytes order inside provided buffer (in place). * * @note Only for internal use in nrf_crypto. * * @param[in,out] p_buffer Buffer with data to swap. * @param[in] size Number of bytes in @p p_buffer. */ void nrf_crypto_internal_swap_endian_in_place(uint8_t * p_buffer, size_t size); /** @internal @brief Copy from one buffer to another and swap byte order. * * @note Only for internal use in nrf_crypto. * * @param[out] p_out Buffer with source data. * @param[in] p_in Destination buffer with swapped bytes. * @param[in] size Number of bytes in @p p_out and @p p_in. */ void nrf_crypto_internal_swap_endian(uint8_t * p_out, uint8_t const * p_in, size_t size); /** @internal @brief Swap bytes order inside buffer containing two integers (in place). * * @note Only for internal use in nrf_crypto. * * @param[in,out] p_buffer Buffer with data to swap. * @param[in] part_size Number of bytes in single integer which is half of size of @p p_buffer. */ void nrf_crypto_internal_double_swap_endian_in_place(uint8_t * p_buffer, size_t part_size); /** @internal @brief Copy from one buffer containing two integers to another and swap byte order of each integer. * * @note Only for internal use in nrf_crypto. * * @param[out] p_out Buffer with source data. * @param[in] p_in Destination buffer with swapped bytes. * @param[in] part_size Number of bytes in single integer which is half of size of @p p_out and @p p_in. */ void nrf_crypto_internal_double_swap_endian(uint8_t * p_out, uint8_t const * p_in, size_t part_size); #ifdef __cplusplus } #endif /**@} */ #endif // NRF_CRYPTO_SHARED_H__